WO2013072948A1 - ポンプ及び冷凍サイクル装置並びにポンプの製造方法 - Google Patents

ポンプ及び冷凍サイクル装置並びにポンプの製造方法 Download PDF

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Publication number
WO2013072948A1
WO2013072948A1 PCT/JP2011/006334 JP2011006334W WO2013072948A1 WO 2013072948 A1 WO2013072948 A1 WO 2013072948A1 JP 2011006334 W JP2011006334 W JP 2011006334W WO 2013072948 A1 WO2013072948 A1 WO 2013072948A1
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WO
WIPO (PCT)
Prior art keywords
pump
pilot hole
stator
mold
foot
Prior art date
Application number
PCT/JP2011/006334
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
洋樹 麻生
坂廼邊　和憲
山本　峰雄
石井　博幸
隼一郎 尾屋
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2011/006334 priority Critical patent/WO2013072948A1/ja
Priority to EP11875604.8A priority patent/EP2781758B1/de
Priority to US14/353,887 priority patent/US9702366B2/en
Priority to JP2013543979A priority patent/JP5901649B2/ja
Publication of WO2013072948A1 publication Critical patent/WO2013072948A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • the present invention relates to a pump, a refrigeration cycle device such as an air conditioner, a floor heating device, and a hot water supply device, and a method for manufacturing the pump.
  • Patent Document 2 Also disclosed is “a mold stator and a pump unit that can be firmly assembled” (see, for example, Patent Document 2).
  • the pump disclosed in Patent Document 2 has a “lead wire lead-out component that is wound around a plurality of teeth provided with an insulating portion of a stator core, a coil is formed, an electronic component is mounted, and a lead wire is lead out.
  • a plurality of screw holes in the vicinity of the outer peripheral portion are assembled together with a bowl-shaped partition wall part having a flange-shaped partition wall part that is fitted and fitted with a rotor having a rotor part and an impeller on the shaft.
  • a pump unit having a plurality of tapping screws Through the threaded hole parts, signed a tapping screw into the prepared hole to expose the mold the stator, so that assembling the pump portion and the mold stator ".
  • JP 2006-200197 A page 3, summary
  • JP 2010-106733 A pages 7-8, claim 1
  • the pump described in Patent Document 1 is a tapping screw that connects a casing and a stator to a stator (stator) formed of a thermosetting mold resin such as an unsaturated polyester resin through a screw hole provided in the casing. Assemble it with. Therefore, with the deterioration of the mold resin due to vibration or the like, the assembly strength between the casing and the stator (stator) may be reduced.
  • the pump described in Patent Document 2 includes mounting legs (mounting legs 45) having holes (holes 45a) for fixing to a casing (casing 41), for example, to a tank unit of a heat pump hot water supply device, at three locations. Yes.
  • the mold stator does not include a portion for fixing to the tank unit or the like. For this reason, there is a possibility that the casing may break without being able to withstand the weight of the pump, and the casing may cause fatigue failure due to vibration of the pump.
  • the pump described in Patent Document 2 has a mold resin deterioration due to vibration or the like when the tapping screw is directly fastened to the mold stator.
  • the assembly strength between the casing and the mold stator may be reduced.
  • the pump described in Patent Document 2 may lead to an increase in cost of the pump when another part having a pilot hole for fastening a tapping screw is insert-molded into the mold stator.
  • the present invention has been made to solve the above-described problems, and provides a pump, a refrigeration cycle apparatus, and a pump manufacturing method capable of firmly assembling a pump and a tank unit on which the pump is mounted. It is intended to provide.
  • a coil is formed by winding around a plurality of teeth provided with an insulating portion of a stator core, and an electronic component is mounted and a lead wire lead-out component that feeds out a lead wire is attached.
  • a pilot hole component including a stator having a substrate assembled thereon and a plurality of foot portions having pilot holes for assembling a pump portion is integrally molded with a mold resin, and the pilot hole component is formed on one end surface in the axial direction.
  • a mold stator in which the pilot hole of the foot portion is exposed, a casing having a water suction port and a discharge port, a rotation that is mounted so that the shaft cannot rotate inside, and includes a rotor portion and an impeller on the shaft
  • a part of the foot part of the pilot hole part is the A predetermined distance extends from the other foot toward the side opposite to the opening-side end surface of the pilot hole, and the pilot hole formed in the foot penetrates both end surfaces of the foot, and the axial direction of the mold stator It is exposed on the other end surface of the.
  • the refrigeration cycle apparatus is such that a refrigerant circuit and a water circuit are connected via a refrigerant-water heat exchanger, and the pump is mounted on the water circuit.
  • the stator core teeth are provided with an insulating portion, and the stator is manufactured by winding a coil around the teeth provided with the insulating portion.
  • a rotor part is manufactured by integrating a resin magnet and a sleeve bearing provided on the inner side of the resin magnet to manufacture a rotor, and an impeller is further manufactured.
  • stator and the pilot hole part are integrally molded with a mold resin to manufacture a mold stator, and the shaft is mounted so that the shaft cannot rotate, and the shaft includes a rotor portion and an impeller.
  • the pump is assembled by fixing the casing to the bowl-shaped partition wall part having a bowl-shaped partition wall part and a flange part with which the rotor is fitted, and the bowl-shaped partition wall part is assembled, and a plurality of screws are provided near the outer periphery.
  • a step of manufacturing a pump part having a hole, and the pump part is assembled to the mold stator, and a tapping screw is fastened to the pilot hole exposed by the mold stator through the screw hole of the pump part. And assembling the pump part and the mold stator. And the extent, those with a.
  • the tapping screw is fastened to the pilot hole exposed to the foot portion of the mold stator through the screw hole of the pump fixing portion provided in the tank unit or the like of the water heater equipped with the pump, Since the pump and the tank unit and the like on which the pump is mounted are assembled, the pump unit and the mold stator can be firmly assembled, and the pump and the tank unit and the like can be firmly assembled.
  • the pump manufacturing method of the present invention since the pilot hole for assembling the pump portion to the mold stator and the pilot hole for assembling the tank unit or the like on which the pump is mounted are provided at the same time, the pump can be prepared without preparing separate parts. The part and the mold stator can be firmly assembled, and the pump and the tank unit on which the pump is mounted can be firmly assembled.
  • FIG. 1 It is a schematic circuit block diagram which shows an example of the circuit structure of the heat pump type hot water supply apparatus which concerns on embodiment of this invention. It is a disassembled perspective view of the pump which concerns on embodiment of this invention. It is a perspective view of the mold stator of the pump which concerns on embodiment of this invention. It is a back perspective view of a mold stator of a pump concerning an embodiment of the invention. It is sectional drawing of the mold stator of the pump which concerns on embodiment of this invention. It is a front view of the mold stator of the pump which concerns on embodiment of this invention. It is a disassembled perspective view of the stator assembly of the pump which concerns on embodiment of this invention.
  • FIG. 1 is a schematic circuit configuration diagram showing an example of a circuit configuration of a heat pump hot water supply apparatus 300 (hereinafter referred to as a hot water supply apparatus 300) according to an embodiment of the present invention.
  • a hot water supply apparatus 300 a heat pump hot water supply apparatus 300
  • summary is briefly demonstrated about the heat pump type hot water supply apparatus which is an example of the refrigerating-cycle apparatus with which the pump which concerns on embodiment of this invention is used.
  • the relationship of the size of each component may be different from the actual one.
  • the hot water supply apparatus 300 is an example of a refrigeration cycle apparatus including a refrigerant circuit, and includes a heat pump unit 100, a tank unit 200, and an operation unit 11 on which a user performs an operation.
  • a heat pump unit 100 includes a compressor 1 that compresses a refrigerant (for example, a rotary compressor, a scroll compressor, a vane compressor, etc.) and a refrigerant-water heat exchanger that exchanges heat between the refrigerant and water.
  • a refrigerant for example, a rotary compressor, a scroll compressor, a vane compressor, etc.
  • a refrigerant-water heat exchanger that exchanges heat between the refrigerant and water.
  • a decompression device 3 that decompresses and expands the high-pressure refrigerant
  • an evaporator 4 that evaporates the low-pressure two-phase refrigerant
  • a pressure detection device 5 that detects the discharge pressure of the compressor 1
  • a refrigerant-water heat exchanger 2 Boiling temperature detection means 8
  • feed water temperature detection means 9 of the refrigerant-water heat exchanger 2 outside air temperature detection means 17, a fan 7 that blows air to the evaporator 4, and a fan motor 6 that drives the fan 7,
  • a heat pump unit controller 13 that controls the fan 7, and a heat pump unit controller 13.
  • the compressor 1, the refrigerant side of the refrigerant-water heat exchanger 2, the decompressor 3, and the evaporator 4 are connected in a ring shape by a refrigerant pipe 15 to constitute a refrigerant circuit.
  • the heat pump unit controller 13 receives signals from the pressure detector 5, the boiling temperature detector 8, the feed water temperature detector 9, and the outside air temperature detector 17, and controls the rotation speed of the compressor 1 and the decompressor 3.
  • the opening degree control, the rotation speed control of the fan motor 6, and transmission / reception of signals to / from the tank unit control unit 12 are performed.
  • the tank unit 200 includes a hot water tank 14 that stores hot water heated by exchanging heat with a high-temperature and high-pressure refrigerant in the refrigerant-water heat exchanger 2, and a bath water reheating heat exchanger that replenishes the bath water.
  • bath water circulation device 32 pump 10 which is a hot water circulation device arranged between refrigerant-water heat exchanger 2 and hot water tank 14, refrigerant-water heat exchanger 2, hot water tank 14 and bath water follow-up
  • a mixing valve 33 connected to the soaking heat exchanger 31, a tank water temperature detecting device 34, a water temperature detecting device 35 after reheating for detecting the water temperature after passing through the bath water reheating heat exchanger 31, and mixing
  • a post-mixing water temperature detection device 36 that detects the water temperature after passing through the valve 33 and the tank unit control unit 12 are provided.
  • the hot water tank 14, the mixing valve 33, the pump 10, and the water side of the refrigerant-water heat exchanger 2 are connected by a hot water circulation pipe 16. Further, the hot water tank 14 and the mixing valve 33 are connected by a bath water recirculation pipe 37.
  • the tank unit control unit 12 receives signals from the tank water temperature detection device 34, the after-reheating water temperature detection device 35, and the mixed water temperature detection device 36, and controls the rotation speed of the pump 10, the opening and closing control of the mixing valve 33, and Signals are transmitted to and received from the operation unit 11.
  • the tank unit control unit 12 is illustrated as if it is provided in the hot water tank 14, but is actually provided outside the hot water tank 14.
  • the operation unit 11 is a remote controller or an operation panel provided with a switch or the like for a user to set a temperature of hot water or give a hot water instruction.
  • a normal boiling operation in the hot water supply apparatus 300 configured as described above will be described.
  • the heat pump unit control unit 13 sets each actuator (drive components such as the compressor 1, the decompression device 3, and the fan motor 6). Is controlled to perform boiling operation.
  • the heat pump unit control unit 13 provided in the heat pump unit 100 includes the pressure detection device 5, the boiling temperature detection unit 8, the feed water temperature detection unit 9, the detection value of the outside air temperature detection unit 17, the tank unit control unit. Based on the information from the operation unit 11 transmitted from 12, the rotation speed control of the compressor 1, the opening degree control of the decompression device 3, and the rotation speed control of the fan motor 6 are performed.
  • the detection value of the boiling temperature detection means 8 is transmitted and received between the heat pump unit control unit 13 and the tank unit control unit 12, and the tank unit control unit 12 sets the temperature detected by the boiling temperature detection means 8 as the target.
  • the rotation speed of the pump 10 is controlled so as to reach the boiling temperature.
  • the temperature of the high-temperature and high-pressure refrigerant discharged from the compressor 1 decreases while radiating heat to the water supply circuit side by the refrigerant-water heat exchanger 2.
  • the high-pressure and low-temperature refrigerant that has radiated heat and passed through the refrigerant-water heat exchanger 2 is decompressed by the decompression device 3.
  • the refrigerant that has passed through the decompression device 3 flows into the evaporator 4 where it absorbs heat from outside air.
  • the low-pressure refrigerant exiting the evaporator 4 is sucked into the compressor 1 and circulates to form a refrigeration cycle.
  • the water in the lower part of the hot water tank 14 is led to the refrigerant-water heat exchanger 2 by driving the pump 10 which is a hot water circulation device.
  • water is heated by heat radiation from the refrigerant-water heat exchanger 2, and the heated hot water is returned to the upper part of the hot water tank 14 through the hot water circulation pipe 16 to be stored.
  • the pump 10 is used as a hot water circulation device for circulating hot water in the hot water circulation pipe 16 between the hot water tank 14 and the refrigerant-water heat exchanger 2.
  • FIG. 2 is an exploded perspective view of the pump 10.
  • the pump 10 includes a pump unit 40 that absorbs and discharges water by rotation of a rotor (described later), a mold stator 50 that includes a mechanism for driving the rotor, and a pump unit 40.
  • tapping screws 160 five in the example of FIG. 2 that are fastening screws for fastening the mold stator 50 to each other.
  • the number of tapping screws 160 is not limited to five.
  • the pump 10 has five tapping screws 160 through the screw holes 44a formed in the boss portion 44 of the pump portion 40, and the pilot holes 81 (see FIG. 5 described later) embedded in the mold stator 50. It is assembled by fastening to 84.
  • FIG. 3 is a perspective view of the mold stator 50
  • FIG. 4 is a rear perspective view of the mold stator 50
  • FIG. 5 is a sectional view of the mold stator 50
  • FIG. 6 is a front view of the mold stator 50
  • FIG. It is a disassembled perspective view of the assembly 49.
  • the mold stator 50 is obtained by molding a stator assembly 49 (described later) with a mold resin 53.
  • One end surface (on the pump unit 40 side) in the axial direction of the mold stator 50 is a flat pump unit installation surface 63 along the outer peripheral edge.
  • feet 85 (see FIGS. 7 and 8) of the pilot hole part 81 of the substantially cylindrical resin molded product are embedded in the axial direction.
  • the pilot hole 84 opens to the pump portion installation surface 63 in a state where the pilot hole part 81 is embedded in the mold resin.
  • one end surface (on the pump unit 40 side) of the foot portion 85 of the pilot hole part 81 becomes a mold pressing portion 82 (see FIG. 5) of the molding die. Therefore, a part of the end surface of the pilot hole component 81 is exposed in a form embedded in the mold resin in the axial direction by a predetermined distance from the pump portion installation surface 63. What is exposed is a mold retainer 82 and a pilot hole 84 for the tapping screw 160.
  • the axial positioning of the mold stator 50 during molding with the mold resin 53 is performed on the axially outer end faces of the plurality of protrusions 95a formed on the substrate pressing component 95 (see FIG. 7). Is executed by becoming the upper mold holding part. Therefore, the axially outer end surfaces (mold pressing surfaces) of the plurality of protrusions 95a are exposed on the axial end surface of the mold stator 50 on the substrate 58 side.
  • the axial end surface of the insulating part 56 on the anti-connection side becomes a lower mold pressing part. Therefore, the end surface of the insulating portion 56 on the opposite side is exposed on the axial end surface of the mold stator 50 opposite to the substrate 58 (not shown).
  • the positioning of the mold stator 50 in the radial direction at the time of molding is performed by fitting the inner peripheral surface of the stator core 54 to the mold. Therefore, the tips (inner peripheral portions) of the teeth of the stator core 54 of the stator assembly 49 are exposed at the inner peripheral portion of the mold stator 50 shown in FIG.
  • stator assembly 49 (lead wire 52, stator core 54, insulating portion 56, coil 57, substrate 58, terminal 59, etc. shown in FIG. 5) and pilot hole component 81. Will be described later.
  • the stator assembly 49 includes a stator 47 and a pilot hole part 81.
  • the stator assembly 49 is manufactured by the following procedure.
  • a strip-shaped stator core 54 in which electromagnetic steel sheets having a thickness of about 0.1 to 0.7 mm are punched into a strip shape and laminated by caulking, welding, bonding, or the like is manufactured.
  • the strip-shaped stator core 54 includes a plurality of teeth.
  • the tips of the teeth of the stator core 54 are exposed on the inner periphery of the mold stator 50 shown in FIG. Since the stator core 54 shown here has twelve teeth connected by the thin-walled connecting portion, the tips of the teeth of the stator core 54 are exposed at 12 locations also in FIG. However, the teeth visible in FIG. 3 are five of the twelve teeth.
  • An insulating portion 56 is applied to the teeth of the stator core 54.
  • the insulating portion 56 is formed integrally with or separately from the stator core 54 using, for example, a thermoplastic resin such as PBT (polybutylene terephthalate).
  • a concentrated winding coil 57 is wound around the teeth provided with the insulating portion 56. Twelve concentrated winding coils 57 are connected to form a three-phase single Y-connection winding.
  • a terminal 59 (see FIG. 5, power supply) to which the coil 57 of each phase (U phase, V phase, W phase) is connected is connected to the connection side of the insulating portion 56.
  • the supplied power supply terminal and neutral point terminal) are assembled. There are three power terminals and one neutral point terminal.
  • substrate 58 is attached to the insulation part 56 (side in which the terminal 59 is assembled
  • the substrate 58 is sandwiched between the insulating portion 56 by the substrate pressing component 95.
  • an IC 58a driving element for driving an electric motor (brushless DC motor), a hall element 58b (see FIG. 5, position detecting element) for detecting the position of the rotor 60, and the like are mounted. Since the IC 58a is mounted on the substrate pressing component 95 side of the substrate 58, it can be seen in FIG. 7, but the Hall element 58b is mounted on the side opposite to the IC 58a, and is not visible in FIG.
  • the IC 58a and the Hall element 58b are defined as electronic components.
  • a lead wire lead-out component 61 that leads out the lead wire 52 to a notch near the outer peripheral edge portion is attached to the substrate 58.
  • the substrate 58 to which the lead wire lead-out component 61 is attached is fixed to the insulating portion 56 by the substrate holding component 95, and the pilot hole component 81 is assembled to the stator 47 to which the terminal 59 and the substrate 58 are soldered.
  • the stator assembly 49 is completed.
  • FIG. 8 is a front view (a) and a plan view (b) showing the pilot hole part 81.
  • FIG. The configuration of the pilot hole component 81 will be described with reference to FIG.
  • the pilot hole part 81 is formed by molding a thermoplastic resin such as PBT (polybutylene terephthalate).
  • the pilot hole part 81 includes a pilot hole 84 (see FIG. 8B) for fastening the tapping screw 160 when the pump unit 40 is assembled, and a protrusion 83 with which the mold die abuts during molding.
  • a plurality of foot portions 85 of a substantially cylindrical portion provided with are connected by a thin connection portion 87.
  • the pilot hole part 81 includes five legs 85. After the pilot hole part 81 is molded together with the stator 47, the substantially cylindrical leg part 85 is formed so that the pilot hole part 81 is prevented from coming off, and the exposed end surface (the mold presser part 82 and the protrusion) 83 end) is a taper shape that becomes thicker toward the center.
  • the pilot hole part 81 includes a plurality of protrusions 85 a (for example, four on one leg part 85) on the outer peripheral part of the leg part 85 for preventing rotation of the pilot hole part 81.
  • the protrusion 85a is formed in a predetermined circumferential width and slightly shorter than the foot 85 in the height direction of the foot 85. Further, the protrusion 85a protrudes in the radial direction from the outer peripheral portion of the foot portion 85 by a predetermined dimension necessary to prevent the pilot hole component 81 from rotating.
  • the pilot hole part 81 can be set in a mold at once by connecting the substantially cylindrical foot part 85 with a thin connection part 87, thereby reducing the processing cost.
  • a part (two places in the example of FIG. 8) of the foot part 85 of the pilot hole part 81 extends a predetermined distance from the other foot part 85 toward the side opposite to the side where the pump part 40 is assembled.
  • a pilot hole 84 for fastening the tapping screw 160 when assembling the portion 40 passes through both end surfaces of the foot portion 85.
  • the extended hole 84 of the foot 85 is exposed on the axial end surface of the foot 85 of the mold stator 50.
  • the pilot hole 84 functions as a pilot hole for assembling the pump unit 40 to the mold stator 50 and a pilot hole for assembling the pump 10 to a unit on which the pump 10 is mounted. Therefore, the pump 10 and the unit on which the pump 10 is mounted can be firmly assembled.
  • a configuration in which a pilot hole that assembles the pump unit 40 to the mold stator 50 by penetrating the foot 85 and a pilot hole that is assembled to a unit on which the pump 10 is mounted is shown. It is not limited to. For example, a necessary number of feet provided with pilot holes for assembling the pump portion 40 to the mold stator 50 and a number of feet provided with pilot holes for assembling the unit on which the pump 10 is mounted are connected by a thin connecting portion 87. Good. In this case, regardless of the position of the foot portion having the pilot hole for assembling the pump portion 40 to the mold stator 50, the foot portion having the pilot hole for assembling the unit for mounting the pump 10 is arranged at a position suitable for unit fixing. Thus, the pump 10 can be more firmly assembled to the unit.
  • a pilot hole to be assembled to the unit on which the pump 10 is mounted may be provided in any direction.
  • the tapping screw 160 for assembling the pump 10 to the unit can be fastened from an arbitrary direction, and workability can be improved.
  • the connecting portion 87 of the pilot hole component 81 has a substantially cylindrical shape in which the approximate center of the foot portion 85 protrudes a predetermined distance in the radial direction, and the cylindrical portion includes a thermoplastic resin injection port 88 for forming the pilot hole component. (5 locations in FIG. 8).
  • the injection port 88 is formed in a cylindrical portion that protrudes a predetermined distance from the connecting portion 87 in the middle of the foot portion 85.
  • the pilot hole 84 of the tapping screw 160 provided in the foot portion 85 of the pilot hole part 81 is prevented from being taken into the cavity of the mold by making the inner diameter straight, thereby improving the productivity of the pilot hole part 81. It becomes possible to improve.
  • a plurality of claws (claws 86 in FIG. 7) for assembling the pilot hole part 81 to the stator 47 are provided in the connecting part 87 of the pilot hole part 81, and formed on the outer peripheral part of the stator core 54 of the stator 47.
  • the end surface (die holding part 82 (die holding part 82) of the pilot hole 84 for the tapping screw 160 of the pilot hole part 81 is formed. 8) and a projection 83 (see FIG. 8) provided on the other end surface of the pilot hole part 81 are held by a molding die to position the pilot hole part 81 in the axial direction.
  • the outer diameter D2 of the die pressing portion 82 on the opening side end face of the lower hole 84 for the tapping screw 160 of the lower hole part 81 is made smaller than the outer diameter D1 of the end face on the opening side of the lower hole part 81 (see FIG. 5). ).
  • the end surface of the pilot hole part 81 is covered with the mold resin 53 except for the mold pressing portion 82. Therefore, since both end surfaces of the pilot hole component 81 are covered with the mold resin 53, it is possible to suppress the exposure of the pilot hole component 81 and improve the quality of the pump 10.
  • the pilot hole part 81 assembled to the stator 47 is integrally formed with the mold resin 53, and at this time, the pilot hole 84 for the tapping screw 160 of the foot portion 85 of the pilot hole part 81 is exposed. .
  • the pump part 40 and the mold stator 50 are fastening to the pilot hole 84 with the tapping screw 160 through the screw hole 44a formed in the pump part 40, the pump part 40 and the mold stator 50 are firmly connected. Can be assembled (see FIG. 2).
  • the mold stator 50 is a pilot hole in which the extended foot 85 of the pilot hole part 81 extends toward the side opposite to the side where the pump part 40 is assembled, and penetrates the both end surfaces of the pilot hole part 81. 84 is exposed on the side opposite to the side where the pump unit 40 is assembled.
  • the tapping screw 160 is fastened to the pilot hole 84 exposed to the foot 85 of the mold stator 50 through the screw hole of the pump fixing part provided in the tank unit or the like of the hot water supply device in which the pump 10 is mounted. Can be firmly assembled.
  • FIG. 9 is an exploded perspective view of the pump section 40
  • FIG. 10 is a perspective view of the bowl-shaped partition wall component 90 seen from the bowl-shaped partition wall 90a side
  • FIG. 11 is a sectional view of the pump 10
  • FIG. It is the perspective view seen from 46 side.
  • the pump unit 40 includes the following elements.
  • the casing 41 has a fluid suction port 42 and a discharge port 43, and houses the impeller 60 b of the rotor 60 therein.
  • the casing 41 is molded using a thermoplastic resin such as PPS (polyphenylene sulfide).
  • the casing 41 is provided with five boss portions 44 having screw holes 44a used for assembling the pump portion 40 and the mold stator 50 at the end portion on the fluid suction port 42 side.
  • Thrust bearing 71 The material of the thrust bearing 71 is ceramic such as alumina. Since the rotor 60 is pressed against the casing 41 via the thrust bearing 71 by the pressure difference acting on the front and back of the impeller 60b of the rotor 60 during operation of the pump 10, the thrust bearing 71 is made of ceramic. To ensure wear resistance and slidability.
  • the rotor 60 includes a rotor portion 60a and an impeller 60b.
  • the rotor portion 60a includes a ring-shaped (cylindrical) resin magnet 68 (an example of a magnet) formed from pellets obtained by kneading magnetic powder such as ferrite and resin, and a cylindrical sleeve bearing provided inside the resin magnet 68.
  • 66 (for example, made of carbon) is integrated with a resin portion 67 such as PPE (polyphenylene ether) (see FIG. 11 described later).
  • the impeller 60b is a resin molded product such as PPE (polyphenylene ether).
  • the rotor part 60a and the impeller 60b are joined by ultrasonic welding or the like.
  • the material of the shaft 70 is ceramic such as alumina, SUS or the like. Since the shaft 70 slides with a sleeve bearing 66 provided in the rotor 60, a material such as ceramic or SUS is selected to ensure wear resistance and slidability.
  • One end of the shaft 70 is inserted into the shaft support portion 94 of the bowl-shaped partition wall component 90, and the other end of the shaft 70 is inserted into the shaft support portion 46 of the casing 41.
  • One end of the shaft 70 inserted into the shaft support portion 94 of the bowl-shaped partition wall component 90 is inserted so as not to rotate with respect to the shaft support portion 94.
  • one end of the shaft 70 is a D-shape with a predetermined length (axial direction) cut out of a circular portion, and the hole of the shaft support portion 94 of the bowl-shaped partition wall component 90 is also shaped to match the shape of the shaft. It has become. Further, the other end of the shaft 70 inserted into the shaft support portion 46 of the casing 41 has a D-shape with a predetermined length (axial direction) cut out of a circular shape, and the shaft 70 extends in the length direction. It is symmetrical. However, the other end of the shaft 70 is rotatably inserted into the shaft support portion 46 of the casing 41. The reason why the shaft 70 is symmetrical in the length direction is to enable assembly without being aware of the vertical direction when the shaft 70 is inserted into the shaft support portion 94 of the bowl-shaped partition wall component 90 (see FIG. 9). ).
  • O-ring 80 The material of the O-ring 80 is EPDM (ethylene-propylene-diene rubber) or the like.
  • Ethylene-propylene-diene rubber is obtained by introducing a small amount of a third component into an ethylene-propylene rubber (EPM), which is a copolymer of ethylene and propylene, and providing a double bond in the main chain.
  • EPM ethylene-propylene rubber
  • Typical third components include ethylidene norbornene (ENB), 1,4-hexadiene (1,4-HD), dicyclopentadiene (DCP), and the like.
  • the O-ring 80 is sandwiched between the casing 41 of the pump unit 40 and the bowl-shaped partition wall component 90 to seal the water circuit.
  • heat resistance and long life are required for the seal around the water, and therefore, heat resistance is ensured by using a material such as EPDM.
  • a bowl-shaped partition wall part 90 The bowl-shaped partition wall component 90 is molded using a thermoplastic resin such as PPE (polyphenylene ether).
  • the bowl-shaped partition wall component 90 includes a bowl-shaped partition wall portion 90 a that is a fitting portion with the mold stator 50 and a flange portion 90 b.
  • the bowl-shaped partition wall 90a is composed of a circular bottom and a cylindrical partition.
  • a shaft support portion 94 into which one end of the shaft 70 is inserted is erected at a substantially central portion of the inner surface of the circular bottom portion.
  • a plurality of (for example, ten) reinforcing ribs 91 that reinforce the flange 90b are formed radially on the flange 90b.
  • the flange portion 90b includes an annular rib 93 (see FIG. 10) that fits in the pump portion installation surface 63 of the pump portion 40 of the mold stator 50. Further, holes 90d (see FIG. 9) through which the tapping screw 160 passes are formed in the flange portion 90b at five locations. Further, an annular O-ring storage groove 90c (see FIG. 9) for storing the O-ring 80 is formed on the surface of the flange portion 90b on the casing 41 side.
  • the casing 41 is assembled to the bowl-shaped partition wall part 90 to assemble the pump part 40, and the pump part 40 is assembled to the mold stator 50 and the tapping screw is assembled. It is fixed and assembled by 160 or the like.
  • a rotor 60 is fitted into a shaft 70 inserted into the shaft support portion 94 of the bowl-shaped partition wall component 90 and accommodated on the inner periphery of the bowl-shaped partition wall portion 90 a of the bowl-shaped partition wall component 90. Therefore, in order to ensure the coaxiality of the mold stator 50 and the rotor 60, the gap between the inner periphery of the mold stator 50 and the outer periphery of the bowl-shaped partition wall portion 90a of the bowl-shaped partition wall component 90 should be as small as possible. For example, the gap is selected to be about 0.02 to 0.06 mm.
  • the bowl-shaped partition wall portion 90a of the bowl-shaped partition wall component 90 is inserted into the inner periphery of the mold stator 50.
  • the air escape path becomes narrow, and it becomes difficult to insert the bowl-shaped partition wall component 90. Therefore, it is preferable to provide a groove (not shown) in the axial direction on the inner peripheral portion of the mold stator 50 to provide an air escape path. If no groove is provided, the gap should be set larger than 0.02 to 0.06 mm.
  • FIG. 13 is a sectional view of the rotor portion 60a (AA sectional view of FIG. 15),
  • FIG. 14 is a side view of the rotor portion 60a viewed from the impeller mounting portion 67a side, and
  • FIG. 16 is an enlarged cross-sectional view of the sleeve bearing 66 as viewed from the opposite side of the vehicle mounting portion 67a.
  • the rotor unit 60a will be described with reference to FIGS.
  • the rotor part 60a includes at least the following elements.
  • the resin magnet 68 and the sleeve bearing 66 are integrally formed of a thermoplastic resin (resin portion 67) such as PPE (polyphenylene ether).
  • Resin magnet 68 The resin magnet 68 has a substantially ring shape (cylindrical shape) and is formed of pellets obtained by kneading a magnetic powder such as ferrite and a resin.
  • the sleeve bearing 66 (for example, made of carbon) is provided inside the resin magnet 68.
  • the sleeve bearing 66 has a cylindrical shape. Since the sleeve bearing 66 rotates by being fitted to the shaft 70 assembled to the bowl-shaped partition wall component 90 of the pump 10, sintered carbon suitable for a bearing material, PPS (polyphenylene sulfide) added with carbon fiber, or the like. Manufactured with thermoplastic resin, ceramic, etc.
  • the sleeve bearing 66 has a draft taper whose outer diameter decreases from the approximate axial center toward both ends, and includes a plurality of hemispherical protrusions 66a (see FIG. 16) that prevent rotation at the approximate axial center on the outer peripheral side.
  • Resin portion 67 (the impeller mounting portion 67a for attaching the impeller 60b is also integrally formed with the resin portion 67 made of thermoplastic resin)
  • a first recess 67b is formed at a location of a magnet pressing portion provided in the upper mold of the resin molding die.
  • the first concave portion 67b is formed in a substantially central portion (radial direction).
  • the first recess 67 b is formed at a position facing the protrusion 68 a of the resin magnet 68.
  • three impeller positioning holes 67c for attaching the impeller 60b are formed in the impeller attaching portion 67a at substantially equal intervals in the circumferential direction.
  • the impeller positioning hole 67c passes through the impeller attachment portion 67a.
  • the impeller positioning hole 67c is formed on the intermediate radial extension line of two of the three projections 68a (three projections 68a are shown in FIG. 14) of the resin magnet 68.
  • the impeller mounting portion 67a has gates 67e (resin injection ports) formed by the thermoplastic resin (resin portion 67) of the rotor portion 60a at substantially equal intervals in the circumferential direction. For example, three are formed.
  • the gate 67e is formed on the inner side of the impeller positioning hole 67c on the radial extension line of the three protrusions 68a of the resin magnet 68.
  • the resin portion 67 formed on the inner peripheral surface of the resin magnet 68 on the side opposite to the impeller mounting portion 67a is fitted with a positioning projection (not shown) provided on the lower mold of the resin molding die.
  • a notch 67d is formed (see FIGS. 13 and 15). In the example of FIG. 15, the notches 67d are formed at four locations at approximately 90 ° intervals. The notch 67d is formed at a position of a notch 68b (described later, FIG. 19) of the resin magnet 68.
  • FIG. 17 is a sectional view of the resin magnet 68 (BB sectional view of FIG. 19)
  • FIG. 18 is a side view of the resin magnet 68 viewed from the projection 68a side
  • FIG. 19 is a view of the resin magnet 68 viewed from the opposite side of the projection 68a.
  • the resin magnet 68 shown here has eight magnetic poles.
  • the resin magnet 68 is provided with a plurality of tapered notches 68b at substantially equal intervals in the circumferential direction on the inner peripheral side of the end surface opposite to the impeller mounting portion 67a in a state of being molded in the rotor 60.
  • the notch 68b has a tapered shape in which the diameter on the end face side is larger than the inner side in the axial direction.
  • the resin magnet 68 has substantially square (arc-shaped) protrusions 68a at substantially equal intervals in the circumferential direction from the end surface opposite to the end surface where the tapered notch 68b is formed to the inner peripheral side of a predetermined depth. Provide multiple. In the example of FIG. 18, there are three protrusions 68a.
  • the protrusion 68a has a substantially square shape when viewed from the side, and includes a protrusion 68a-1 on the end face side.
  • the convex portion 68a-1 provided at the end of the protrusion 68a is held by a thermoplastic resin (resin portion 67) that forms the rotor portion 60a.
  • the shape of the protrusion 68a is not limited to a substantially square shape. A shape such as a triangle, a trapezoid, a semicircle, or a polygon may be used.
  • the resin magnet 68 is formed in the rotor 60, and a gate 68c (FIG. 5) is supplied with a plastic magnet (a material of the resin magnet 68) on the side opposite to the magnetic pole position detection element (Hall element 58b (see FIG. 5)). 19), and the position of the gate 68c is between the electrodes.
  • a gate 68c to which the resin magnet 68 is supplied between the magnetic poles on the opposite side of the magnetic pole position detection element (Hall element 58b (see FIG. 5)
  • variation in the magnetic pole is suppressed, and the magnetic pole position detection accuracy is improved. It is possible to improve the quality.
  • the hollow portion of the resin magnet 68 has a straight shape from the end surface where the projection 68a is formed to the center position in the approximate axial direction, and the approximate axis from the end surface opposite to the end surface where the projection 68a is formed.
  • the center position in the direction is a tapered shape. Therefore, the productivity of the resin magnet 68 is improved, and the manufacturing cost can be reduced. That is, since the hollow portion of the resin magnet 68 is cut out and tapered, it is possible to prevent the fixed-side mold from being taken into the cavity and to improve the productivity of the resin magnet 68.
  • the mold for molding the resin magnet 68 is divided into a fixed mold and an operating mold at the end surface of the protrusion 68a on the tapered side, and a part of the hollow portion formed by the operating mold is a straight shape. As a result, it is possible to prevent the fixed-side mold from being taken into the cavity and to improve the productivity of the resin magnet 68. Remove from the working mold by pushing out with ejector pins.
  • the resin magnet 68 has a plurality of radial projections 68e having a substantially elongated hole shape on the end surface facing the magnetic pole position detection element (Hall element 58b (see FIG. 5)) (see FIG. 19). In the example of 19, it is 8). Further, as shown in FIG. 18, a plurality of radial recesses 68d (eight in the example of FIG. 18) are formed on the end face on the impeller mounting portion 67a side.
  • the convex part 68 e and the concave part 68 d are embedded with the thermoplastic resin (resin part 67), and the resin magnet 68 is held by the resin part 67.
  • the convex portion 68 e formed on the side opposite to the magnetic pole position detection element (Hall element 58 b (see FIG. 5)) is formed substantially at the center of the magnetic pole formed on the rotor 60. That is, it is formed radially between the gates 68c to which the material of the resin magnet 68 is supplied.
  • the magnetic force is ensured by providing the convex portion 68e at the pole center, and the quality of the pump 10 can be improved by improving the magnetic pole position detection accuracy by the Hall element 58b. Further, the performance of the pump 10 can be improved by improving the magnetic force of the resin magnet 68.
  • the recess 68d formed on the impeller mounting portion 67a side of the resin magnet 68 is substantially the same radial shape as the position between the magnetic poles formed on the rotor 60, that is, the position of the gate 68c to which the material of the resin magnet 68 is supplied. Located in.
  • the recesses 68d between the poles of the resin magnet 68 it is possible to suppress a decrease in magnetic force as much as possible and to suppress a decrease in performance of the pump 10.
  • At least one of the convex portion 68e formed on the side opposite to the magnetic pole position detecting element (Hall element 58b (see FIG. 5)) of the resin magnet 68 or the concave portion 68d formed on the impeller mounting portion 67a side is the rotor 60.
  • the same number of magnetic poles are formed.
  • the resin magnet 68 is provided with a magnetic pole position detection unit 68f protruding in an axial direction with a predetermined width and a predetermined height on the outer peripheral portion of the end surface on the opposite side of the magnetic pole position detection element (Hall element 58b (see FIG. 5)). Provided (see FIGS. 17 and 19). By reducing the axial distance between the magnetic pole position detector 68f of the resin magnet 68 and the Hall element 58b mounted on the substrate 58, the magnetic pole position detection accuracy can be improved.
  • the Hall element 58b which is a Hall IC surface-mounted on the substrate 58, is used as the magnetic pole position detection element, and the leakage magnetic flux of the resin magnet 68 is detected from the axial end surface (the surface facing the magnetic pole position detection element) of the resin magnet 68.
  • the processing cost of the substrate 58 is compared with the case where the Hall element 58b is fixed to the substrate 58 with a Hall element holder (not shown) and the main magnetic flux of the resin magnet 68 is detected from the side surface of the resin magnet 68.
  • the cost of the pump 10 can be reduced.
  • the resin magnet 68 is taken as an example.
  • the mold for integrally molding the resin magnet 68 and the sleeve bearing 66 is composed of a fixed mold and an operating mold (not shown).
  • the sleeve bearing 66 is set on the working side mold. Since the sleeve bearing 66 is symmetrical in the direction perpendicular to the axis, the vertical direction can be set in the mold in an arbitrary direction. Further, the sleeve bearing 66 includes a plurality of protrusions 66a (see FIG. 16) on the outer peripheral portion, but the position of the protrusion 66a is not particularly limited. Can be set. Therefore, the work process when the resin magnet 68 and the sleeve bearing 66 are integrally formed is simplified, the productivity is improved, and the manufacturing cost can be reduced.
  • the sleeve bearing 66 When the sleeve bearing 66 is set in the working side mold, the sleeve bearing 66 and the post-process are retained by the inner diameter of the sleeve bearing 66 being held in a sleeve bearing insertion portion (not shown) provided in the working side mold. The accuracy of the coaxiality with the resin magnet 68 set in is secured.
  • the resin magnet 68 is disposed on one end surface of the resin magnet 68 (the end surface opposite to the impeller mounting portion 67a in the state of the rotor 60 of the pump motor) after the sleeve bearing 66 is set in the working side mold.
  • a tapered notch 68b provided on the inner diameter is set by being fitted to a positioning protrusion (not shown) provided on the working side mold.
  • there are eight notches 68b, but four of them are fitted into positioning protrusions (not shown) of the working side mold.
  • the eight cutouts 68b are provided in order to improve workability when the resin magnet 68 is set in the working mold.
  • the magnet pressing portion (not shown) of the fixed side mold is connected to the inner peripheral portion of the other end surface of the resin magnet 68 (the end surface on the impeller mounting portion 67a side in the state of the rotor 60 of the pump motor). It is pressed from the axial direction to the substantially square-shaped protrusion 68a formed in the above. Thereby, the positional relationship and coaxiality of the sleeve bearing 66 and the resin magnet 68 are ensured.
  • the mold installation surface (the part pressed by the mold) of the protrusions 68a is formed after integral molding.
  • the three protrusions 68a ensure the positioning accuracy of the resin magnet 68 and, at the same time, secure the inflow path of the thermoplastic resin used for integral molding, thereby relaxing the molding conditions during integral molding and producing This is to improve the performance.
  • the protrusion pressing portion (not shown) of the fixed mold is the inner diameter pressing portion.
  • the workability of setting the resin magnet 68 on the mold is improved by creating a gap between the insertion portion (not shown) of the resin magnet 68 of the working side mold and the outer diameter of the resin magnet 68.
  • the manufacturing cost is reduced.
  • thermoplastic resin such as PPE (polyphenylene ether) is injection molded to form the rotor portion 60a.
  • PPE polyphenylene ether
  • notches 68b FIG. 19
  • convex portions 68e provided on the end face of the resin magnet 68 on the side opposite to the magnetic pole position detection element
  • the recess 68d provided on the end surface on the impeller mounting portion 67a side is embedded in the resin portion 67 of thermoplastic resin and serves as a transmission portion of the rotational torque.
  • the convex portion 68e and the concave portion 68d are embedded in the resin portion 67 of thermoplastic resin, the resin magnet 68 is firmly held.
  • the resin magnet 68 and the sleeve bearing 66 are integrally formed of a thermoplastic resin (resin portion 67), when the resin magnet 68 is magnetized, the rotor portion 60a is opposite to the impeller mounting portion 67a.
  • the notches 67d (four locations in the figure) formed on the inner peripheral surface of the end surface of the resin magnet 68 for positioning at the time of magnetization, it is possible to perform magnetization with high accuracy.
  • the pilot hole part 81 assembled to the stator 47 is integrally formed with mold resin, and at this time, the pilot hole 84 for the tapping screw of the foot 85 of the pilot hole part 81 is exposed.
  • the tapping screw is fastened to the pilot hole 84 through the screw hole of the pump fixing part provided in the tank unit or the like of the water heater equipped with the pump 10, and the pump 10 and the unit are assembled. 50 can be firmly assembled.
  • the pilot hole part 81 includes a pilot hole for assembling the pump unit 40 to the mold stator 50 and a pilot hole for assembling the pump 10 to the unit on which the pump 10 is mounted.
  • the pump 10 and the unit on which the pump is mounted can be firmly assembled.
  • the connecting portion 87 of the pilot hole component 81 has a substantially cylindrical shape in which the approximate center of the foot 85 protrudes a predetermined distance in the radial direction, and a thermoplastic resin injection port for forming the pilot hole component is formed in the substantially cylindrical portion.
  • FIG. 20 is a diagram showing a manufacturing process of the pump 10. The manufacturing process of the pump 10 will be described with reference to FIG.
  • Step 1 An electromagnetic steel sheet having a thickness of about 0.1 to 0.7 mm is punched into a band shape, and a band-shaped stator core 54 is manufactured by laminating by caulking, welding, adhesion, or the like.
  • the sleeve bearing 66 is manufactured.
  • the resin magnet 68 is formed.
  • Step 2 Winding is performed on the stator core 54.
  • An insulating portion 56 using a thermoplastic resin such as PBT (polybutylene terephthalate) is applied to the teeth of the band-shaped stator core 54 connected by the thin-walled connecting portion.
  • a concentrated winding coil 57 is wound around the teeth provided with the insulating portion 56.
  • twelve concentrated winding coils 57 are connected to form a three-phase single Y-connection winding. Since it is a three-phase single Y connection, a terminal 59 (a power supply terminal to which power is supplied and a middle terminal) to which a coil 57 of each phase (U phase, V phase, W phase) is connected is connected to the connection side of the insulating portion 56.
  • Sex point terminal is assembled.
  • the substrate 58 is manufactured.
  • the substrate 58 is sandwiched between the insulating portion 56 by the substrate pressing component 95.
  • an IC for driving an electric motor (brushless DC motor), a Hall element for detecting the position of the rotor 60, and the like are mounted on the substrate 58.
  • a lead wire lead-out component 61 that leads out the lead wire 52 to a notch near the outer peripheral edge portion is attached to the substrate 58.
  • the rotor part 60a is manufactured.
  • the rotor portion 60a includes a ring-shaped (cylindrical) resin magnet 68 formed by pelletizing a magnetic powder such as ferrite and a resin, and a cylindrical sleeve bearing 66 (for example, carbon) provided inside the resin magnet 68.
  • a resin magnet 68 formed by pelletizing a magnetic powder such as ferrite and a resin
  • a cylindrical sleeve bearing 66 for example, carbon
  • the impeller 60b is formed.
  • the impeller 60b is molded using a thermoplastic resin such as PPE (polyphenylene ether).
  • Step 3 A substrate 58 is assembled to a stator 47 in which a stator iron core 54 is wound.
  • the substrate 58 to which the lead wire lead-out component 61 is attached is fixed to the insulating portion 56 by the substrate holding component 95.
  • the impeller 60b is assembled to the rotor portion 60a by ultrasonic welding or the like.
  • the bowl-shaped partition wall component 90 is formed.
  • the shaft 70 and the thrust bearing 71 are manufactured.
  • the shaft 70 is manufactured from SUS.
  • the thrust bearing 71 is made of ceramic.
  • the substrate 58 is soldered.
  • the terminals 59 power supply terminals to which power is supplied and neutral point terminals
  • the substrate 58 are soldered.
  • the plurality of legs 85 having a substantially cylindrical portion provided with a pilot hole 84 for fastening the tapping screw 160 when the pump unit 40 is assembled and a projection 83 with which the mold die abuts at the time of molding is a thin connecting portion.
  • the pilot hole part 81 connected at 87 is formed.
  • the pilot hole component 81 includes a pilot hole 84 so that a part of the foot 85 extends a predetermined distance toward the opposite side of the opening side end face of the pilot hole 84 and penetrates both end faces of the leg 85.
  • the casing 41 is formed.
  • the casing 41 is molded using a thermoplastic resin such as PPS (polyphenylene sulfide).
  • the rotor 60 and the like are assembled to the bowl-shaped partition wall component 90.
  • Step 5 The mold stator 50 is manufactured. By assembling the pilot hole part 81 to the stator 47, the stator assembly 49 is completed. The stator assembly 49 is molded to manufacture the mold stator 50. In addition, the pump 41 is assembled by fixing the casing 41 to the bowl-shaped partition wall component 90. In addition, a tapping screw 160 is also manufactured.
  • Step 6 The pump 10 is assembled.
  • the pump unit 40 is assembled to the mold stator 50 and fixed with a tapping screw 160.
  • the pump unit 40 is assembled to the mold stator 50, and the tapping screw 160 is fastened to the prepared hole 84 exposed through the screw hole 44a of the pump unit 40 to fix the mold.
  • the child 50 and the pump unit 40 are fixed.
  • FIG. 21 is a conceptual diagram showing a circuit configuration of a refrigeration cycle apparatus using the refrigerant-water heat exchanger 2.
  • the heat pump hot water supply apparatus 300 described with reference to FIG. 1 is an example of a refrigeration cycle apparatus that uses the refrigerant-water heat exchanger 2.
  • Examples of devices that use the refrigerant-water heat exchanger 2 include air conditioning devices, floor heating devices, and hot water supply devices.
  • the pump 10 according to the present embodiment is mounted in a water circuit of a device that uses the refrigerant-water heat exchanger 2, and water (hot water) cooled or heated by the refrigerant-water heat exchanger 2 is placed in the water circuit. Circulate.
  • the refrigeration cycle apparatus using the refrigerant-water heat exchanger 2 has a compressor 1 (for example, a scroll compressor, a rotary compressor, etc.) that compresses the refrigerant, and the refrigerant and water exchange heat.
  • a refrigerant circuit having a refrigerant-water heat exchanger 2, an evaporator 4 (heat exchanger) and the like is provided.
  • a water circuit having a pump 10, a refrigerant-water heat exchanger 2, a load 20 and the like is provided. That is, the refrigerant circuit and the water circuit are connected by the refrigerant-water heat exchanger 2 to exchange heat.
  • the refrigerant-water heat is improved as the performance and quality of the pump 10 and the productivity are improved.
  • the refrigeration cycle apparatus using the exchanger 2 can be improved in performance, quality, and cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
PCT/JP2011/006334 2011-11-14 2011-11-14 ポンプ及び冷凍サイクル装置並びにポンプの製造方法 WO2013072948A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2011/006334 WO2013072948A1 (ja) 2011-11-14 2011-11-14 ポンプ及び冷凍サイクル装置並びにポンプの製造方法
EP11875604.8A EP2781758B1 (de) 2011-11-14 2011-11-14 Pumpe, kältekreislaufvorrichtung und verfahren zur herstellung der pumpe
US14/353,887 US9702366B2 (en) 2011-11-14 2011-11-14 Pump, refrigeration cycle device, and method of producing pump
JP2013543979A JP5901649B2 (ja) 2011-11-14 2011-11-14 ポンプ及び冷凍サイクル装置並びにポンプの製造方法

Applications Claiming Priority (1)

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PCT/JP2011/006334 WO2013072948A1 (ja) 2011-11-14 2011-11-14 ポンプ及び冷凍サイクル装置並びにポンプの製造方法

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JP5686827B2 (ja) * 2013-01-23 2015-03-18 株式会社鷺宮製作所 遠心ポンプ
FR3009586B1 (fr) * 2013-08-06 2015-08-28 Snecma Dispositif d'alimentation en ergol de moteur-fusee
FR3030147B1 (fr) * 2014-12-11 2018-03-16 Mmt Sa Actionneur avec modules statorique et rotorique enrobes
CN106286378B (zh) * 2015-05-20 2020-12-01 浙江三花汽车零部件有限公司 离心泵
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